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Significant Figures Operations

Add 3.1421 ,0...

Question

Add 3.1421 ,0.241 and 0.09 and give your answer with correct precision

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Solution

3.1421
0.241
+0.09 ← (least no. of decimal places)
________

3.4731
rounding off to 2 decimal places as the answer must have the same number of decimal places as are present in the number having the least no. of decimal places.

Answer : 3.47

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